Full Credits
16 members

Basil Rathbone
Sherlock Holmes

Nigel Bruce
Doctor Watson

Marjorie Riordan
Sheila Woodbury

Rosalind Ivan
Agatha Dunham

Morton Lowry
Steward

Leslie Vincent
Nikolas Watson

Martin Kosleck
Mirko

Rex Evans
Gregor

John Abbott
Jodri

Gerald Hamer
Kingston

William 'Wee Willie' Davis
Gubek

Frederick Worlock
Prime Minister

Tom Dillon
Matthias Cherney (uncredited)
James Carlisle
Aide (uncredited)

Olaf Hytten
Stimson (uncredited)

Gordon Jackson
Steward (uncredited)
14 members
Roy William Neill
Director
Leonard Lee
Screenplay
Arthur Conan Doyle
Characters
Howard Benedict
Executive Producer
Roy William Neill
Producer
Paul Ivano
Director of Photography
Bernard B. Brown
Sound Director
Martin Obzina
Art Direction
Ralph Sylos
Set Decoration
John B. Goodman
Art Direction
Russell A. Gausman
Set Decoration
Vera West
Costume Design
Jack Pierce
Makeup Department Head
Saul A. Goodkind
Editor